BGE Reranker v2 vs Aya Expanse 32B

Compare BGE Reranker v2 and Aya Expanse 32B: pricing, performance, context window, latency, and best use cases. Side-by-side comparison on XALEN.

Updated 2026-05-21 · By Abhishek Raj · Our methodology

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Feature BGE Reranker v2 Aya Expanse 32B
CategoryRerankingOpen Source
Parameters568M32B
Context Window8K128K
Input Price$0.003/1M tokens$0.03/1M tokens
Output PriceN/A/1M tokens$0.06/1M tokens
Latency~30ms~250ms

Choose BGE Reranker v2 when:

  • ✓ RAG reranking
  • ✓ Search improvement
  • ✓ Citation accuracy
Key Strengths:

High precision, Cross-encoder, Improves RAG quality

Choose Aya Expanse 32B when:

  • ✓ Multilingual apps
  • ✓ Translation
  • ✓ Global content
Key Strengths:

23 languages, Open weights, Strong multilingual

Verdict: BGE Reranker v2 vs Aya Expanse 32B

For cost efficiency, BGE Reranker v2 wins at $0.003/1M input tokens. For speed, Aya Expanse 32B is faster at ~250ms. BGE Reranker v2 excels at RAG reranking while Aya Expanse 32B is better for Multilingual apps. Both are available on XALEN through a single API — try them in the Playground to see which fits your workload.

Detailed Analysis

Pricing Comparison

BGE Reranker v2 costs $0.003/1M input tokens and N/A/1M output tokens. Aya Expanse 32B costs $0.03 input and $0.06 output. BGE Reranker v2 is 10.0x cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.

Performance & Context

BGE Reranker v2 has a 8K context window with ~30ms latency. Aya Expanse 32B offers 128K context at ~250ms. Aya Expanse 32B has the larger context window.

Best For

BGE Reranker v2 (Reranking) is optimized for: RAG reranking, Search improvement, Citation accuracy. Aya Expanse 32B (Open Source) works best for: Multilingual apps, Translation, Global content.

Try Both on XALEN

Both models are available through XALEN's OpenAI-compatible API. Switch between them by changing the model parameter:

from xalen import XALEN

client = XALEN(api_key="xln_test_YOUR_KEY")

# Use BGE Reranker v2
response_a = client.chat.completions.create(
    model="bge-reranker-v2",
    messages=[{"role": "user", "content": "Your question here"}]
)

# Use Aya Expanse 32B
response_b = client.chat.completions.create(
    model="c4ai-aya-expanse-32b",
    messages=[{"role": "user", "content": "Your question here"}]
)

Start Building with XALEN

200+ AI models. One API. Pay-as-you-go.

Get API Key Try in Playground

Frequently Asked Questions

Which is better, BGE Reranker v2 or Aya Expanse 32B?

BGE Reranker v2 (Reranking, 568M) offers High precision. Aya Expanse 32B (Open Source, 32B) offers 23 languages. Choose BGE Reranker v2 for RAG reranking or Aya Expanse 32B for Multilingual apps.

How much does BGE Reranker v2 cost vs Aya Expanse 32B?

BGE Reranker v2: $0.003/1M input, N/A/1M output. Aya Expanse 32B: $0.03/1M input, $0.06/1M output. Both available on XALEN with batch processing at 50% discount.

Can I use both models on XALEN?

Yes. XALEN provides 200+ models through a single OpenAI-compatible API. Switch between BGE Reranker v2 and Aya Expanse 32B by changing the model parameter. No code changes needed.

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Last updated: 2026-05-21. Pricing and specifications may change. Check pricing page for latest rates.